I have also tested some p channel mosfets on the board but I believe they are OK. Voltage on power switch is +2.79 volts when both the charger and battery are connected.
When I connect the power adapter +3.3v_alw and +5v_alw on PL9 and PL10(on page 46 of schematic 3.3V_ALW / 5V_ALW(TPS51427A)) respectively is present but when i remove the charger and connect only battery the +3.3v_alw and +5v_alw on PL9 and PL10 is absent. Back to Contents Page Power Supply Unit Dell Studio One 19/1909 Service Manual Removing the Power Supply Unit Replacing the these. DELL Studio- Computer Power Supply 130 Watt Brand New and Original Replacement Part with 3 Months Warranty Part Number is: 0T9002 Note: Picture may slightly. I have also disassembled this laptop and tested further When connecting battery and charger the white led on charger socket turns on and the voltage on charging jbat1(page 53) connector is +12.59 volts. The LED attached to the power switch blinks for 1/2 second and then nothing happens.īattery is fully charged :+11.8 volts all 5 led on when pressed power button on battery. The problem with this motherboard is that it fails to power on.
The Model number of laptop is : Dell 1558 studio PP39L This time i am unable to fix a laptop motherboard and i need help. I have repaired some laptops and other circuits just by reading the information provided by this forum. First of all many many thanks to the members of this forum.